Visualized analyzing system for storm surge process along Fujian coast

Storm Surge is one kind of serious natural disasters coming from the sea, for the sudden reduction in atmospheric pressure and the destruction of the following strong winds, it often imposes huge damage on coastal regions. Many systems have been developed for the simulation and prediction of storm surges in the last decade. Though they have powerful simulating and calculating capability, it is far from enough to research on the way to express spatio-temporal data and provide the interactive visualized analysis efficiently and thoroughly. GIS as an effective tool could visualize temporal and spatial processes and analyze spatial data. Thus the way to integrate Storm Surge prediction system with GIS would be helpful to resolve the upper problem. According to the characteristic of Taiwan Strait, a validated numerical mode for storm surge along Fujian coast was selected. Using the data acquired from observation stations and applying a new visualizing technique for multi-dimensional data, we developed a fast forecasting and warning system. Based on a symmetry spiral coordinate system, this visualizing model for multi-dimensional data utilizes the unique rotation factor and the symmetrical projection feature of spiral line, arrange each dimensional data along spatial and symmetrical spiral line. The observations obtained along Fujian coastal region in 2006 are verified and simulated by the visualized analyzing system.